CAJ | 학술논문

　　目的探讨平山病患者自然位和过屈位时颈椎MRI影像学表现及过屈位脊膜后间隙大小对平山病诊断价值。材料与方法对9例临床确诊为平山病患者和10名健康志愿者行自然位和过屈位MR扫描，观察其影像学表现，测量过屈位平山病和对照组脊膜后间隙大小。结果自然位平山病患者颈椎曲度异常，低位脊髓出现萎缩、扁平。过屈位时颈髓前移、变扁，脊膜后间隙出现异常信号，增强后显著强化。平山病和对照组过屈位脊膜后间隙分别为(6.8±0.5 mm)和(4.2±0.4) mm，差异有统计学意义(P<0.01)。结论平山病患者过屈位颈椎脊膜后间隙增宽并见异常信号，结合自然位和过屈位MRI影像学特点可协助诊断。
　　목적탐토평산병환자자연위화과굴위시경추MRI영상학표현급과굴위척막후간극대소대평산병진단개치。재료여방법대9례림상학진위평산병환자화10명건강지원자행자연위화과굴위MR소묘，관찰기영상학표현，측량과굴위평산병화대조조척막후간극대소。결과자연위평산병환자경추곡도이상，저위척수출현위축、편평。과굴위시경수전이、변편，척막후간극출현이상신호，증강후현저강화。평산병화대조조과굴위척막후간극분별위(6.8±0.5 mm)화(4.2±0.4) mm，차이유통계학의의(P<0.01)。결론평산병환자과굴위경추척막후간극증관병견이상신호，결합자연위화과굴위MRI영상학특점가협조진단。
Objective: To investigate the MRI characteristic of the spinal cord in neutral position and fully flexed position of the neck, and to analyze diagnostic value of the subdural space in fully lfexed position. Materials and Methods:MRI examinations in neutral neck position and a fully lfexed neck position were performed in 9 cases of Hirayama disease and 10 normal control subjects. The MRI features of Hirayama were analyzed and the subdural spaces in the fully flexed position were measured in the patients and control groups. Results: In the neutral position, the cervical curvature become straighten lower cervical cord become atrophy and lfattening for the patient group. In a fully lfexed position, the patient group showed forward displacement and lfattening of the lower cervical cord. There was a crescent-shaped abnormal signal in the subdural space and showed significant enhancement after contrast medium administration. The subdural space between the patients (6.8±0.5) mm and control (4.2±0.4) mm respectively and showed significant difference (P<0.01). Conclusions:The subdural space, which was broadened and seen abnormal signals in a fully lfexed position, have a certain value combined with neutral and fully lfexed position MR features in the diagnosis of Hirayama.